Product material: NeopreneSize: 25 cm * 17 cm * 4 cmColor: BlackQuantity: 1 piecePackage content: 1 piece * Running vest1. SUPER LIGHTWEIGHT - Thanks to the unique patented design and breathable neoprene material, the running vest is very lightweight.2. EASY TO USE - No more unnecessary fumbling with the mobile phone behind a clumsy plastic screen. Simply pull out the mobile phone, use it and put it back again.3. SECURE FIT - The unique design of the vest holds the mobile phone firmly and securely in the mobile pocket and prevents it from bouncing up and down during walks, ensuring a comfortable fit. Inside the mobile pocket there is a small pocket with Velcro, perfect for money, ID and cards.4. WITH KEY CLIP - Front door or car keys can be securely attached to the matching clip in the shoulder strap.5. IDEAL FOR RUNNING LIGHTS - Lights for running in the dark can be easily attached to the shoulder straps and back strap of the training vest.